A. By what endocytosis process do some white blood cells engulf bacteria? These channels are . If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. This is also seen when two liquid reactants are mixed with one another. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient". When red blood cells are in a hypertonic (higher concentration) solution, water flows out of the cell faster than it comes in. Predict what will happen to a patient's red blood cells if you give the patient an IV of pure water. Cells placed in a hypotonic solution will take in water across their membranes until both the external solution and the cytosol are isotonic. Which of the following is used to export large molecules from the cell? Some transport processes use transport proteins in the plasma membrane, but do not require ATP. This is an example of: Resting membrane potential is due to unequal concentrations of: Two types of active transport via vesicles are: Which of the following best describes secondary active transport? does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? How, exactly, does the sodium-potassium pump establish a voltage across the membrane? However, the township-and-range system uses simplified calculation to create a more ordered landscape. Based on the map above, explain the degree to which lettuce production takes place in the United States. The two images show different agricultural methods. What would happen if a cell dissolved in water, like sugar does? The greater the surface area, the faster the rate of diffusion. What is transported across a membrane during osmosis? Facilitated diffusion is powered entirely by GTP hydrolysis B. Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. Spontaneous activity releases energy, non-spontaneous activity (like moving something against its concentration gradient) requires energy. All the ways scientists do investigations. D. Secondary active transport involves the movement of a substance into a cell with its concentration gradient. What part of the plasma membrane is hydrophobic? Facilitated diffusion is necessary for the movement of large or polar molecules across the hydrophobic lipid bilayer. The liver is an organ that can synthesize lipids, such as cholesterol, and detoxify poisons, such as alcohol. The site owner may have set restrictions that prevent you from accessing the site. Direct link to Dovid Shaw's post how does the antiporter p, Posted 7 years ago. Great question since proteins are very large and complex they almost always have regions with different characteristics including patches that have negative or positive charges. Which of the following best describes the settlement patterns shown in the images? Which of the following scenarios best explains the Columbian Exchange? This results in swelling of the cell and potential hemolysis (bursting) of the cell. The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. The gradient is steep enough that potassium ions will move out of the cell (via channels), despite a growing negative charge on the interior. So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. i dont quite understand the secondary active transport. Which of the following organelles will be abundant in liver cells? What four steps should you take to reduce your risk for foodborne illnesses? start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. Have you ever colored a picture with marker and noticed that two touching colors begin to bleed together? Option C is the correct answer because Cultural divergence (CD) happens when two cultures separate, therefore CD explains the best concept of driving forces of contemporary cultural diffusion. However, the same phenomenon is not seen when immiscible liquids like petrol and water are mixed together. (2005). Which of the following best explains the significance of similarities between the farming practices for apple orchards and grape vineyards? Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. If you've accidentally put the card in the wrong box, just tap on the card to take it out of the box. The SER synthesizes the majority of the lipid components of the plasma membrane. to send you a reset link. Animal Gas Exchange and Transport | Organismal Biology - gatech.edu Which of the following solutions contains the most solute? This is usually not directed in any particular manner, and can appear random. LEFT ARROW - move card to the Don't know pile. Which of the following best describes the differences in the agricultural practices and land use for these products? Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop. Which of the following best explains diffusion? Which of the following best explains the differences between the patterns of land use in the township-and-range system and the long-lot system, as shown in the images? are in the same box the next time you log in. Cells may lyse when placed into a hypertonic environment. Solved Which of the following best explains the effect of - Chegg gradient? The use of improved plant hybrids and agricultural chemicals. How is the , Posted 7 years ago. Can you find a safe way to heat or cool the food coloring before adding it to the water? The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. On a similar note, any solute that is broken into small pieces and stirred into the solvent dissolves rapidly another indicator of molecules diffusing better when the area of interaction increases. A number of colonies were established and settled by people from Great Britain. The electrochemical gradients set up by primary active transport store energy, which can be released as the ions move back down their gradients. If you forget it there is no way for StudyStack Channels Channel proteins span the membrane and make hydrophilic tunnels across it, allowing their target molecules to pass through by diffusion. The function of the plasma membrane is to control what goes in and out of the cell. "Permeable" means that anything can cross a barrier. Do you think the temperature of the food coloring might have an effect on how it diffuses? Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. Direct link to Ivana - Science trainee's post yes, dimensions also play. Spaeth, E. E., and Friedlander, S.K. You now add the two solutions to a beaker that has been divided by a semipermeable membrane, with pores that are too small for the sugar molecules to pass through, but are big enough for the water molecules to pass through. If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell. in a symporter it makes sense that the flow of one ion should cause other molecules to go along with it, however in an antiporter, what causes the other molecule to move up its conc. Concentric rings of different agricultural activities surrounding a city in the midwestern United States. A typical grocery store in the United States may sell oranges grown primarily in California during part of the year and oranges grown primarily in South Africa during a different part of the year. The hypertonic solution has a lower water concentration than the hypotonic solution, so a concentration gradient of water now exists across the membrane. This page titled 8.4: Osmosis and Diffusion is shared under a CK-12 license and was authored, remixed, and/or curated by CK-12 Foundation. A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. Which of the following explains why oranges are available. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Through the process of uniculturalism, multiple types of foods are blended together into one cuisine. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } Figure showing the transport cycle of the sodium-potassium pump. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. Therefore, the rate of diffusion of the gas into air also increases. Question 1 Which of the following can best explain why eukaryotic cells Solved Which of the following BEST explains the difference - Chegg Na+ Ions move easily through water, which is polar, but cannot pass directly through the lipid (nonpolar) part of the cell membrane. The two images represent different agricultural land survey patterns. This type of transport is known as _____. Then tap the card to flip it. movement of molecules from an area of high concentration to an area of low concentration. http://physrev.physiology.org/content/91/2/733, https://phys.org/news/2013-10-mechanism-sodium-potassium-revealed.html. What part of a cell membrane is usually in contact with the interstitial fluid? Diffusion happens slowly and only across the small surface of interaction between the two fluids. This property can be observed even better if the gas has an odor or color. C. The SER manufactures proteins for export from the cell. By diffusion: glucose will move from solution B to solution A. Distinguish among hypotonic, hypertonic, and isotonic solutions. 1) The "sodium/glucose symporter", known as SGLT (sodium glucose linked transporter), receives the energy needed to perform its transport from the electrochemical gradient established by the sodium/potassium pump. Solution A and solution B are separated by a semipermeable membrane. 0 To produce a mRNA molecule to deliver the genetic instructions outside the nucleus. O To edit the mRNA strand and make it ready to leave the nucleus. Philibert, J. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? Which of the following is least likely to increase the rate of diffusion? The plasma membrane is semipermeable, meaning that some things can enter the cell, and some things cannot. 1. The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out. This process does not require energy. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Osmosis is the diffusion of water molecules across a semipermeable membrane from an area of lower concentration solution (i.e., higher concentration of water) to an area of higher concentration solution (i.e., lower concentration of water). A. movement of molecules farther away from equilibrium B. exchange of nonpolar molecules for polar molecules C. movement of molecules from an area of high concentration to an area of low concentration D. movement of molecules from where there are fewer of them to where there are more Unit 3 Culture Test | Geography Quiz - Quizizz When deoxygenated blood is in your capillaries in your lungs, the oxygen in your lungs diffuses from a higher concentration in your lungs to the lower concentration in your blood. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. sideropenia _____________________________________________________. Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. Can you predict, based on the first way of doing the experiment, what might change, if anything? Dairy cows must be kept close to farmhouses, as they require daily milking, and milk must be produced close to consumers, as it is highly perishable. y1=3y2y2=12y1. Primary and secondary active transport. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. The Green Revolution led to an increase in food production in many places around the world, but there have been some negative consequences. The membrane connections that prevent the leaking of fluid between cells are called ________. The images shown illustrate the differences in scale of production for two methods of producing thread. Which of the following best explains the economic advantage of the type of farm-produced goods shown in the images? \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{W}_{\text {cycle }}=250 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=200 \mathrm{kW}} \\ {\text { c. } \dot{W}_{\text {cycle }}=350 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=150 \mathrm{kW}} \\ {\text { d. } \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=200 \mathrm{kW}}\end{array} Also, it is spatially more available than in the case of ATP. Which of the following best compares a technological consequence of the Green Revolution in more developed and less developed countries? Similarly, the medium in which diffusion occurs could also be in one of the three physical states. You can also use your keyboard to move the cards as follows: If you are logged in to your account, this website will remember which cards you know and don't know so that they Which of the following best explains how a wheat farmer in the Northern Plains region of the United States is able to maximize profits? D. Golgi apparatus. how does the antiporter provide energy for molecules to go in the "opposite" direction? Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell? In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? movement of molecules from an area of high concentration to an area of low concentration. C. Extracellular fluid should be isotonic to intracellular fluid. Eventually, the concentration of "stuff" on either side of them will even out. Comparing the two images, which survey system was more efficient in terms of trade? This statement describes _____. Nerve cells do not have centrioles. AP Bio Final 2019 | Biology Quiz - Quizizz C. peroxisome Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? She consumed a large amount of water in a short time (Don't try thiswater intoxication is often fatal.). Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells. Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. Wipe up any spills that may have happened. Mr. Weddington was admitted to the hospital with chronic heart failure. The reaction proceeds towards completion at a faster rate. A substance moves by facilitated diffusion into a cell. Which of the following is not a major function of proteins in the cell membrane? Water is attracted to the compartment with a lower osmotic pressure. Which of the following best explains diffusion? D. The IV fluid should be hypotonic to the patient's blood. Which Of The Following Best Explains Diffusion Quizlet? A. In comparing two solutions of unequal solute concentration, the solution with the higher solute concentration is hypertonic, and the solution with the lower solute concentration is hypotonic. C. The IV fluid should be hypertonic to the patient's blood. Diffusion helps in the movement of substances in and out of the cells. When the roommate told the Emergency Department doctor what had happened, the doctor quickly began administering IV (intravenous) fluids. Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. Muscle cells require an abundant amount of ATP to function. The river in the long lot survey system provided better access to waterways to transport goods to market. Direct link to City Face's post Because a solute moving d, Posted 7 years ago. "Diffusion. Which of the following solutions will cause a red blood cell to shrink? Carbon dioxide is a small molecule that moves through the phospholipid bilayer with its concentration gradient by: Sodium ions are moving with their concentration gradient with the use of a protein channel across a plasma membrane. The material that diffuses could be a solid, liquid or gas. Why can't the Sodium move down it's concentration gradient by using the same channel the Potassium uses? What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Your email address is only used to allow you to reset your password. One of the main characteristics of diffusion is the movement of molecules along the concentration gradient. In its inward-facing shape, the pump loses its interest in (has a low affinity for) potassium ions, so the two potassium ions will be released into the cytoplasm. While this charge ratio does make the cells interior slightly more negative, it actually accounts for only a, Instead, the sodium-potassium pump acts primarily by building up a high concentration of potassium ions inside the cell, which makes potassiums concentration gradient very steep. Simple diffusion and passive transport (article) | Khan Academy